Mventoe



(No Model 0. W. HAMMOND.

PUMP.

' Patented Apr. 1,

ATTORNEYS.

I WITNESSE UNITED STATES PATENT. OFFICE.

ORLIN WV. HAMMOND, OF BELMONT, NE'W YORK.

PUM P.

SPECIFICATION forming part Of Letters Patent 296,001, dated April 1, 1884.

Application filed September 1, 1883. (No model.)

Be it known that I, ORLIN W. HAMMQNQI of Belmont, in the county of Allegany and State of New York, have invented a new and Improved Pump, of which the following is a full, clear, and exact description.

My invention consists of an improved con trivance of lift and force pumps for better adaptation to small-bored wells than as at present arranged; and. it also consists of an air-chamber attachment to the rod for working the piston, said rod being hollow and forming the water-conductor for the delivery of the water from the pump, all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of my improved pump. Fig.2 is a sectional elevation of the pump cylinder and pistons in larger sizeand Fig. 3 is a side elevation of the pump, with a modified form of the cylinder.

The cylinder consists of a lower tube-section, a, and an upper tube-section, b. The lower section is about the full size of the bore of the well, or as near it as will allow of sinking the pump into the well freely and with drawing it when required, the ends of said cylinder being capped with cast-metal heads a and d, bored 21. short depth to receive the ends of the tube, and thus are firmly bound to the ends of the tube by the bolts 0, fitted to'the slotted lugs f of the caps, and extending from one to the other. The upper cylinder, b, is smaller than the lower one, a, and is tightly driven into an opening through cap (I, that is offset sufficiently from the center of cylinder at to allow space at one side of cylinder 1) for connecting the supporting-rod g, by which the pump'cylinder is suspended in the well from the base h of the pump-stock t at the surface of the well, said rod 9 being tapped into the cap and into said base. The lower piston, j, is suspended by a rod, is, from a hanger, Z, of the upper piston, m, the point of connection being as much offset from the center of said piston as the cylinder-centers are offset from each other. The piston m is connected to the hollow piston-rod n, through which the water is forced up to the deliveryspout o by the downward thrust of the piston m against the water contained in the cylinders, and retained by the check-valve p and by the upward thrust of piston j into the diminishing space of the cylinders. At the top of the rod at, above the delivery-spout 0, I

attach an extension-tube, q, of larger dimen-.

the rod is being extended through said tube to connect the two pistons, and the tube being tapped into the caps of the two sections of the cylinder, which caps may be screwed onto said sections, or connected in any approved way. By this offset arrangement of the two sections of the cylinder I am enabled to connect the supporting-rod 9 without any laterally-projecting lug or other extension of the cylinder, and thus provide a pump for small-bored wells in which the whole area of the wellis utilized for the pump, and the form of the pump is better adapted for being sunk into and raised out of the wellfi The lever t, for working the pistons, is mounted on the top of the pump-stock z in the usual manner.

Having thus described my invention, I claim as new and desire to secure by Letters Patent constructed of a larger and a smaller section,

which are connected by a cap, said cap having the smaller section, and offset from the center of the larger section, to allow for the connection to said cap of. a suspending or sup porting rod, substantially as and for the purpose set forth.

QRLIN W. HAMMOND.

Witnesses:

W. H. SoMERs, E. H. KELLER. 

